6, 8, 12, 16 and 24 sides for cylinders and other shapes I want to subdivide. It's easy to get good cuts through the very centers and stuff, especially with 8- and 12-sided cylinders. It's also easy to remember angles when rotating 8-sided cylinders: 45 degrees looks exactly the same as the original 22.5 degrees aligns the…
4, 8, 15, 16, 23, 42 i tend to use 100, and 0 a lot (flow). brush is always at 100, unless i vary pressure w/ opacity. no magic numbers for the layers, just whatever works. Just at the least i have 6 layers with the above numbers in each psd.